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#include <drizzled/server_includes.h>
#include <drizzled/natural_join_column.h>
#include <drizzled/table_list.h>
#include <drizzled/session.h>
Natural_join_column::Natural_join_column(Field *field_param,
TableList *tab)
{
assert(tab->table == field_param->table);
table_field= field_param;
table_ref= tab;
is_common= false;
}
const char *Natural_join_column::name()
{
return table_field->field_name;
}
Item *Natural_join_column::create_item(Session *session)
{
return new Item_field(session, &session->lex->current_select->context, table_field);
}
Field *Natural_join_column::field()
{
return table_field;
}
const char *Natural_join_column::table_name()
{
assert(table_ref);
return table_ref->alias;
}
const char *Natural_join_column::db_name()
{
/*
Test that TableList::db is the same as TableShare::db to
ensure consistency. An exception are I_S schema tables, which
are inconsistent in this respect.
*/
assert(!strcmp(table_ref->db,
table_ref->table->s->db.str) ||
(table_ref->schema_table &&
table_ref->table->s->db.str[0] == 0));
return table_ref->db;
}
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